Re: 24 volt power supply in a 12 volt aircraft.

b vry careful of the grounding required for this setup.

you must generally have a secure and patent ground from the radio to the
chasssis (of the plane) to provide efficeint RF output and reliable receiver
sensitivity.

and as the antenna xmit/receive internal circuitry attempts to switch from
full xmit power and then back to recive mode, ther may be some offsetss
generated.

as the power may be adaptable when just clamping the radio ground to the
same 12 volt ground, the inter mingling systems may genereate some dc
offsett at the ground level.

i would just find a convenient place to lash a good extra 12v battery in
place and then attach the radio to the battery plus, and the battery
negative to the planes 12dc power system. maintenance of the battery should
be minimal.

if this is your only comms unit onthe plane, be sure u alway file a good
flight plan ;-))

while all this may save u a few buks, you really should consider getting a
brand new plane to make sure your radio is correctly installed ;-))


"Al G" <agerhart2@xxxxxxxxxxxxxxxxxx> wrote in message
news:YHLCh.1435$fM7.1212@xxxxxxxxxxxxxxx
Hi folks,

I have access to a very good aircraft radio, at a very reasonable
price.
The problem is that the aircraft that needs the radio is a 12 volt system,
and the radio is 24volt.
Are there any reasonably inexpensive options? I guess we could add
another 12 volt battery, charge them in parallel, and take power off in
series. Are there step up voltage modules out there that would support a 5
watt transmitter?
Any Ideas?

Thanks in advance,

Al G






.

Relevant Pages

  • Re: Mobile installation question
    ... > EMC labs recommend direct connection to the battery. ... automotive electronics most from interferrance from the radio, ... When I'm installing the radio, where should I connect the dc power ... The positive and negative leads from the transceiver should connect ...
    (rec.radio.amateur.equipment)
  • Re: The Hawaii Earthquake
    ... it knocked out power to our island. ... pain it is not to have electricity (we had no electricity for most of the ... the one battery operated radio I have, did not work (it is really, really ...
    (soc.retirement)
  • Re: 24 volt power supply in a 12 volt aircraft.
    ... you must generally have a secure and patent ground from the radio to the ... as the power may be adaptable when just clamping the radio ground to the ... place and then attach the radio to the battery plus, ... if this is your only comms unit onthe plane, be sure u alway file a good ...
    (sci.electronics.misc)
  • Re: 32v System Wiring a new12 Volt System
    ... 32Vdc Battery Bank, and, or, from the Main and Aux engines via a new ... Fishing Vessels were then REQUIRED to have Emergency Lighting, ... Wheelhouse Roof and run heavy Power wires down to the ChartTable ... and the 12Vdc Radio Power Buss. ...
    (rec.boats.electronics)
  • Re: XCOM radio
    ... > XCOM told me that the radio is unique because it can transmit with 0.75 W ... > of power at only 9 V. ... > XCOM feels the radio will work great on a 12V battery. ...
    (rec.aviation.soaring)